On March 8, the Albuquerque Journal News published a story that said, “No one knows yet how or why a waste drum leaked at southeast New Mexico’s Waste Isolation Pilot Plant on Valentine’s Day, triggering alarms, exposing workers and setting off a cascade of events that could cripple the nation’s radioactive waste disposal system.”

Reviewing Dept. of Energy records, the Journal concluded that there were only two likely scenarios for the February 14 accident:

(1) If a waste drum’s contents overheated, that might cause a spontaneous explosion that spread radioactive debris. Planners in 1997 contemplated this possibility before WIPP opened, and gave odds of it happening as 10,000 to 1.

(2) If the roof in one of the salt cavern rooms fell, that might rupture one or more waste drums and lead to the spread of radioactive debris. Planners gave the odds of that happening as one in a million.

The most likely cause of an accident, planners thought, would be mishandling of waste drums by workers, but there were no workers underground on February 14.

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